Examine source code of Christmas Time Animated

{
  "name": "Christmas Time Animated",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "ezgif.com-crop(11).gif"
    },
    "colors": {
      "frame": "rgba(122, 76, 1, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(92, 64, 0, 0.42)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(122, 72, 1, 0.57)",
      "toolbar_field_text": "rgba(255, 211, 150, 1)",
      "tab_line": "rgba(255, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2bdb6254-bdce-4956-ba5f-e7e84fd90c7c}"
    }
  }
}